Originally Posted by eduskator

Technically, yes. However, I don't believe you will notice it. I mean, pro riders ride very narrow handlebars and they need a lot more o2 than us mere humans do when we cycle.

Now, will 2cm less will help? More or less. May-be you will feel better / more secure. If so, then it's a win!

I ride 42cm handlebars when I'm ''supposed'' to ride 44cm, and I will go to 40cm if one day I change my current ones. Narrower just feels better for me.